What is a VR Backpack?

Photo Credit Sam Byford's Article on TheVerge.com (link below).

Alienware, for those of us not into extreme gaming, is a company that makes very expensive hardware for people very into gaming, and now they are venturing into the VR Backpack space, or exploring it at least. 

A bit stunned at WTF could this be, I had to further investigate what a VR backpack was and here it is: wearing a computer on your back, so you don't have to trip over cables and be limited to the proximity of the PC, when you use a PC based VR headset (as you currently need to with all the major robust headsets). 

Personally not a gamer so please read on about the other notables that are already in the game: HP and Zotec.  Even more reading here.